DLMF:10.32.E19 (Q3539)

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DLMF:10.32.E19
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    Statements

    Defining formula
    K μ ⁡ ( z ) ⁢ K ν ⁡ ( z ) = 1 8 ⁢ π ⁢ i ⁢ ∫ c - i ⁢ ∞ c + i ⁢ ∞ Γ ⁡ ( t + 1 2 ⁢ μ + 1 2 ⁢ ν ) ⁢ Γ ⁡ ( t + 1 2 ⁢ μ - 1 2 ⁢ ν ) ⁢ Γ ⁡ ( t - 1 2 ⁢ μ + 1 2 ⁢ ν ) ⁢ Γ ⁡ ( t - 1 2 ⁢ μ - 1 2 ⁢ ν ) Γ ⁡ ( 2 ⁢ t ) ⁢ ( 1 2 ⁢ z ) - 2 ⁢ t ⁢ d t , modified-Bessel-second-kind 𝜇 𝑧 modified-Bessel-second-kind 𝜈 𝑧 1 8 𝜋 𝑖 superscript subscript 𝑐 𝑖 𝑐 𝑖 Euler-Gamma 𝑡 1 2 𝜇 1 2 𝜈 Euler-Gamma 𝑡 1 2 𝜇 1 2 𝜈 Euler-Gamma 𝑡 1 2 𝜇 1 2 𝜈 Euler-Gamma 𝑡 1 2 𝜇 1 2 𝜈 Euler-Gamma 2 𝑡 superscript 1 2 𝑧 2 𝑡 𝑡 {\displaystyle{\displaystyle K_{\mu}\left(z\right)K_{\nu}\left(z\right)=\frac{% 1}{8\pi i}\int_{c-i\infty}^{c+i\infty}\frac{\Gamma\left(t+\frac{1}{2}\mu+\frac% {1}{2}\nu\right)\Gamma\left(t+\frac{1}{2}\mu-\frac{1}{2}\nu\right)\Gamma\left(% t-\frac{1}{2}\mu+\frac{1}{2}\nu\right)\Gamma\left(t-\frac{1}{2}\mu-\frac{1}{2}% \nu\right)}{\Gamma\left(2t\right)}(\tfrac{1}{2}z)^{-2t}\mathrm{d}t,}}
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    DLMF id
    DLMF:10.32.E19
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    constraint
    c > 1 2 ⁢ ( | ℜ ⁡ μ | + | ℜ ⁡ ν | ) , | ph ⁡ z | < 1 2 ⁢ π formulae-sequence 𝑐 1 2 𝜇 𝜈 phase 𝑧 1 2 𝜋 {\displaystyle{\displaystyle c>\tfrac{1}{2}(|\Re\mu|+|\Re\nu|),|\operatorname{% ph}z|<\tfrac{1}{2}\pi}}
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